Khloe Kardashian's Birthday Party in Las Vegas

Khloe might not be 27 until June 27th, but on June 17 she was living it up with her sister Kim, husband Lamar, Kim's fiance Kris Humphries, and brother Rob at the Chateau Nightclub in the Paris Hotel and Casino in Las Vegas, Nevada. Before the festivities began they posed for some photos, and they looked like they were looking forward to quite a night.

Rob Kardashian in Las Vegas for Khloe Kardashian's Birthday Party

Rob looks ready to party June 17 at the Chateau Nightclub in Paris Hotel and Casino in Las Vegas, Nevada.

Kim Kardashian and Fiance Kris Humphries at Khloe's Birthday

Kim and Kris smile for the camera at the Chateau Nightclub in Las Vegas, Nevada on June 17, 2011 celebrating Khloe's birthday.

Khloe Kardashian and Lamar Odom at Khloe's Birthday

Birthday girl Khloe and hubby Lamar look cozy at the photo call before her party in Las Vegas June 17th.